CD274 and neoplasm: Also in our study, poorly differentiated tumors (G3) were associated with increased expression of PD-L1 TPS/TC, for both types of clones used, compared to well-differentiated tumors, which showed low levels of TPS/TC, except for one case of an atypical lipomatous tumor (G1) in which increased expression of PD-L1 TC was identified in the PD-L1 Dako 28-8 clone.